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PDF UPD1723GF-211-3KE Data sheet ( Hoja de datos )
| Número de pieza | UPD1723GF-211-3KE | |
| Descripción | PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LF TUNER CAR AUDIO | |
| Fabricantes | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD1723GF-013, µPD1723GF-213
PLL FREQUENCY SYNTHESIZER AND CONTROLLER
FOR FM/MW/LF TUNER (CAR AUDIO)
The µPD1723GF-013 and µPD1723GF-213 are CMOS LSI developed for worldwide PLL frequency synthesizer
FM/MW/LW tuner use.
Their package is a 64-pin QFP. On-chip PLL frequency synthesizer, controller, 200 MHz prescaler, LCD driver,
and IF counter allow the construction of a compact FM/MW/LW tuner with a high-performance clock for high-
end car stereo and home stereo sets.
FEATURES
• Worldwide FM/MW banks and European LW band can be received.
• Abundant tuning functions, including manual tuning, autotuning (seek, scan), and preset memory scan
• Six buttons, independent preset memories for 18 FM stations (FM1, FM2, FM3; 6 stations each), 12 MW
stations (MW1, MW2; 6 stations each), 6 LW stations, and VF band
• FM: 3, MW: 2, LW: 1, VF: 1 last channel memories
• VF broadcast station (traffic information) autotuning (SK signal search) and DK standby function
• MONO (MONORAL) and LOC (LOCAL/DX) control output and display
• “ST” (STEREO) display
• MTL (METAL), NR1 (NOISE REDUCTION), NR2, and AMS (AUTO MUSIC SEARCH) control output and display
• Auto preset memory function
• “ ” (Compact Disk) display
• LOUD (LOUDNESS) control output and display
• 12 hour and 24 hour clock display function (no clock display also possible)
• Single 5 V ±10 % power supply
• On-chip prescaler (200 MHz max. Vin = 0.3 VP-P), IF counter, LCD driver (1/2 duty, 1/2 bias drive, frame frequency
(100 Hz))
ORDERING INFORMATION
Order Code
µPD1723GF-011-3BE
µPD1723GF-211-3KE
Package
64-pin plastic QFP (14x20)
64-pin plastic QFP (14x20)
Quality Grade
Standard
Standard
Please refer to "Quality grade on NEC Semiconductor Devices" (Document number IEI-1209) published by NEC
Corporation to know the specification of quality grade on the devices and its recommended applications.
Document No. IC–2772
(O.D.No. IC–8187)
Date Published January 1991 P
Printed in Japan
© 1991
1 page  
µPD1723GF-013, µPD1723GF-213
PIN DESCRIPTIONS
PIN No.
1
2
3
4
8
5
SYMBOL
NC
EO1
EO2
VDD1
VDD2
AM
PIN NAME
DESCRIPTION
OUTPUT
TYPE
No
connection
This pin is not connected to the internal chip. There-
fore, leave it open or connect it to GND, VDD, etc.
—
Error out
PLL (Phase Locked Loop) error output pins.
When the frequency obtained by dividing the local
oscillation frequency (VCO output) is higher than the
reference frequency, High level is output from these
pins. When it is lower than the reference frequency,
Low level is output from these pins. When the two fre-
quencies are the same, these pins are floated.
This output is input to an external LPF (Low Pass Filter)
and is applied to a varactor diode through the LPF. EO1
and EO2 output the same waveform so that the pin to
be used can be freely selected. When the radio is OFF,
these pins are floated.
CMOS
3-state
Power
supply input
Device power supply input pin.
This pin supplies 5 V ±10 % power voltage during
device operation (radio, tape, and CD modes). When
the diode matrix NOCLK switch is 1 (shorted by diode),
when the CE pin (pin 7) is made Low level, this pin
drops to 2.5 V and data hold is enabled. When a voltage
of 0 → 4.5 V is supplied to this pin, the data is initialized.
Supply 0 → 4.5 V to this pin within 500 ms.
Always connect pins 4 and 8 to the same potential. VDD1
(pin 4) is the analog system (PLL, A/D converter, INT,
CE) power supply and VDD2 (pin 8) is the digital system
(CPU, LCD driver, IF counter) power supply.
—
AM local
oscillation
input
The AM (MW and LW band) local oscillation output
(VCO output) is input to this pin. When the radio is
turned on and the MW or LW band is received, this pin
becomes active. Otherwise, it is pulled down
internally.
The input amplitude is 0.3 VP-P MIN.
Since there is an on-chip AC amplifier, block the DC
component with a capacitor.
Input
5
5 Page 
µPD1723GF-013, µPD1723GF-213
PIN No.
18
19
20
SYMBOL
MONO/NR2
LOUD
AMS
PIN NAME
Monaural
and noise
reduction
output
DESCRIPTION
OUTPUT
TYPE
In the radio mode, this pin operates as the MONORAL
signal output pin and in the tape mode, this pin oper-
ates as the NOISE REDUCTION signal output pin.
• Radio mode
Each time the MONO key is pressed on the
FM and VF bands, the output is inverted. When the
device is set to the MONORAL state by MONO
key, the LCD panel “MONO” display lights and high
level is output from this pin.
On the MW and LW bands, this pin becomes low.
When the power is turned on, this pin becomes low.
• Tape mode
This pin is valid when the diode matrix ENNR2
CMOS
pushpull
switch to be described later is 1 (shorted by diode).
When NOISE REDUCTION NR2 is selected by press-
ing the NR key or NOISE REDUCTION
function key (selected by diode matrix), high level is
output. At this time, the LCD panel “NR2” display
lights.
In the radio monitor and DK ON modes, the "MONO"
display is inverted and the MONO/NR2 pin is made
MONO output by pressing the MONO key.
When the power is turned on, this pin becomes low.
LOUDNESS signal output pin.
In the radio, tape, and CD modes, the output is inverted
LOUD output
each time the LOUD key is pressed. When the
LOUDNESS state is selected by LOUD key,
the LCD panel “LOUD” display lights and high level is
CMOS
pushpull
output from this pin.
When the power is turned on, this pin becomes low.
AMD signal
output
Tape mode AMS (AUTO MUSIC SEARCH) control signal
output pin.
Its output is inverted each timer the
is pressed.
AMS
key CMOS
pushpull
High level is output while the LCD panel “AMS” dis-
play is lit.
11
11 Page | ||
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